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3 years ago

Chem helpcalculate the wavelength of an electromagnetic wave with a frequency of (in pic)

Chemistry

1 answer:

olchik [2.2K]3 years ago

4 0

we have,

wavelenght=c/f

where c= 3×10^8 m/s

f=6.3×10^12 s^-1

so wavelength=(3×10^8)/(6.3×10^12)

=0.476×10^-4 m

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4 years ago

Ethylenediamine (en) forms an octahedral complex with Ni2+(aq) with the formula [Ni(en)3]2+. Ni2+(aq) + 3 en ⇌ [Ni(en)3]2+(aq) K

yawa3891 [41]

Answer:

$3.125\times 10^{-19} mol/L$ is the concentration of $Ni^{2+}(aq)$ in the solution.

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$Ni^{2+}(aq) + 3 en\rightleftharpoons [Ni(en)_3]^{2+}(aq)$

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$3.125\times 10^{-19} mol/L$ is the concentration of $Ni^{2+}(aq)$ in the solution.

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4 years ago

0.05 moles of HCL are added to 2 L of H2O. What is the molarity of the solution?

EleoNora [17]

The molarity of the solution made by dissolving 0.05 mole of HCl in 2 L of H₂O is 0.025 M

<h3>What is molarity? </h3>

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

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Mole of HCl = 0.05 mole
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Molarity = mole / Volume

Molarity = 0.05 / 2

Molarity = 0.025 M

Thus, the molarity of the solution is 0.025 M

Learn more about molarity:

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3 years ago

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3 years ago

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3 years ago

Chem helpcalculate the wavelength of an electromagnetic wave with a frequency of (in pic)​

Chem helpcalculate the wavelength of an electromagnetic wave with a frequency of (in pic)